The comet has crossed
the path taken by Hyakutake one year earlier. It now lies
in nearly the same spot on the same date 365 days later.
The similarities in these two photos taken one year apart
are eerie. Nikon N90 50mm lens at f 2.0 25 seconds on Fuji
400 HG.

First image is 28 x 20 second images of Hale Bopp obtained between 00:30 and 01:00 UT using
a blue filter and a 12 inch Maksutov telescope has been dark subtracted and
flat fielded,and a false colour pallate applied.

Second image 28 x 20 second exposures of Hale Bopp, taken through a blue filter have been
combined and processed by subtracting a 5 by 5 pixel masked version from
105% of the original image. 1st exposure started at 00:30 UT on April 11th,
last exposure started at 01:00 UT.

Nikon FM2 w/35 mm Nikkor lens at f/2.0 on Royal Gold Kodacolor 400 film for
25 seconds. Comet almost lost in aurora. The northern lights resulted from a
major solar flare on 8 Apr as reported in world news.

The following composite of the comet Hale-Bopp contains two ccd-images.
Both were taken with an ST5 CCD camera.

The left image was taken using a Maksutov telefoto lens with
10cm apperture and f/10 (1m focal length). The Maksutov was used
in prime focus. 4 images of 0.75 seconds have been added using the
track and accumulate mode from CCDops, the camera control software.
The upper image is scaled logarithmically, while the lower one shows
the core region with extremly enhanced contrast. To achieve this, two
images have been created by shifting the original image by 3 pixel in
vertical direction - one up, the other one down. Then the original
image was multiplied by two and both shifted images were subtracted.

The right image has been taken using a 24mm canon lens. The field of
view is abt. 30 arcminutes.

11.7 micron filter (10% bandwidth).
North is up and East to the left, and the image is 44 arcsec on a side. This
is a single 6 second integration.
The image clearly shows the spiral structure towards the Sun, due to a jet from
the comet's surface rotating with the nucleus in an ~11 hour period. The
11.7 um filter contains emission at the peak of the ~300K greybody and
silicate emission features from the comet's dust. Hale-Bopp is one of the
dustiest comets on record.

Meade SCT 10" F10
(FL:2500mm). I used a CCD camera SBIG ST6 and have taken 9 images exposed
1 sec each (Total exposure= 9 sec). All the 9 images were added and
processed by unsharp masking and other processing technics. The blue color
was added to increase the appearance of the comet and is not the real color
of Hale-Bopp. The image is very similar to what we can see now when we
observe Hale-Bopp with a telescope at high magnification. Take a note about
the spiral form of the jet near the false nuclei. The streak in the images
is caused by a star trail in the sky due to the comet movement. All images
were added (AVERAGE) with the comet in registration.